Apparently, coffee with Apple CEO Tim Cook is a big deal. Even bigger, perhaps, than a new 2013 Lamborghini.

CharityBuzz is auctioning off a 30-60 minute coffee break with Tim Cook, and after 85 competitive bids, the current highest offer is $605,000. The amount is now so high that prospective bidders need to personally phone and verify their banking details and ability to pay in order to place a new bid.

The current CharityBuzz record-holder is a March auction of a 2013 Lamborghini Aventador, Felden told me. The 700-horsepower car boasts a 6.5-liter V-12 engine that propels the car from 0-60 mph in under three seconds, and it reaches speeds in excess of 215 mph.

Above: Tim Cook, last October at an Apple event.

Image Credit: Dean Takahashi/VentureBeat

But that sweet Italian supercar may not be worth more than a quick cuppa with Cook.

Cook’s auction started almost a month ago at $50,000, and quickly shot up to $160,000 in a single day. And with one day left, it seems likely to become the highest-value auction ever held on CharityBuzz, Felden said.

Bids close tomorrow at 4:08 p.m., and a potentially winning new bid will have to be at least $610,000, as bid increments are $5,000 each.

That’s $610,000 for a 30-60 minute meeting, travel and accommodations not included. Or over $10,000 for each minute, if it goes the full 60.

“Charitybuzz is blown away by the incredible support we’ve seen for the RFK Center for Justice and Human Rights through our coffee with Tim Cook online auction,” CharityBuzz CEO Coppy Holzman said. “With 140 experiences on the auction block closing this Tuesday to benefit the RFK Center, including exclusive access to Robert DeNiro, Alec Baldwin, Peyton Manning and more, we expect to raise well over one million dollars for human rights.”